Alarm-clock release for phonographs



" Nov. 13,1923. 1,474,240

. L. CRANE ALARM CLOCK RELEASE FOR PHONOGRAPHS Filed Dec. 19. 1922 2 Sheets-Sheet 1 a at .3

l/Vl /E/VTOR Lou/s CRANE.

.4 TTORNEYS Now-13 1923.

-- L. CRANE ALARM CLOCK RELEASE FOR PHONOGRAPHS Filed Dec. 19. 2 Sheets-Sheet 2 IIVVEIVTOR ou/s CRANE,

A TTORNEYS Patented Nov. 13, 1923.

UNITED STATES PATENT OFFICE.

LOUIS CRANE, OF NEW YORK, N. Y.

ALARM-CLOCK RELEASE FOR PHONOGRAPHS.

Appl ication flled December 19, 1922. Serial No. 607,848.

have invented anew and Improved Alarm- Clock Release for Phonographs, of which the following is a full, clear, and exact description. This invention relates to an alarm clock releasing; device for phonographs.

An object of the invention is to so construct an ordinary alarm clock that when associated with the table of a phonograph it will hold the table stationary until the alarm goes off, at which time the table is released permitting the phonograph to play and wake the sleeper.

A further object is to provide an alarm clock with a simple attachment which can be applied thereto without materially affecting the ordinary construction and operation of it, which will act when set to brake the table of a; phonograph until the alarm is given. at which time the brake is released.

A still further object resides in the provision of an alarm operated device which requires neither the material alteration of the alarm clock, nor any alteration whatsoever of the phonograph construction.

Theinvention is illustrated in the drawings of which Figure 1 is an elevation of an alarm clock with the wall of the casing removed showing the parts in the position in which the brake member is held outward from the alarm clock against the table of a phonograph;

Figure 2 is a similar view showing the parts in position when the brake member has been released and the alarm device has been stopped;

Figure 3 is a plan view of the device related with the table;

Figure 4 is a section taken on the line 44 of Figure 1;

Figure 5 is a partial rear elevation of the casing of the clock showing the brake element;

Figure 6 is a section taken on the line 6 -6 of Figure 4; and

Figure 7 is a section taken on the line 7-7 of Figure 1.

The form of the invention shown in the drawings is a preferred form, although it is understood that modifications in the con-.

struction and arrangement of the parts and in the character of the materials usedv may be adopted without departing from the spirit of the invention.

a In the drawings, which illustrate a pre- .ferred form of my invention, I have shown an alarm clock casing 1, within which there" is disposed the usual works frame. In the operation of this alarm clock a bell clapper 3 is vibrated at any desired time in accordance with the setting of the alarm. lVhen this alarm mechanism is set voiit' a shaft 4 rotates. The bell clapper 3 is mounted on a shaft 5 and a finger 6 extends from this shaft and vibrates therewith. The hammer 7 on the end of the clapper lever 3 is adapted to strike the gene; 8 in the usual manner. On the end of the shaft 4 I provide a cam arm 9 adapted to rotate with said shaft. On one side of the frame 2 I dispose a lever 10. This lever l0 I designate as a brake latch lever because its function is to latch and unlatch the brake-element. The upper end of this lever is adaptedto be engaged by the cam arm 9 and move it against the action of a spring 11." The lower end of this lever is adapted to engage the end of a brake element 12 which is in the form of a slidable plate. The inner end of this slidable plate is provided with notche 13 and 14. The plate slides through apertures .formed in the casing 15 of the clock and the wall 16 of the works frame. A spring- 17 is disposed between the inner face of the casing wall 15 and a shoulder 18 on the brake plate. This spring tends normally to force the brake plate or element inwardly. On the outer end of the brake plate which extends without the casing of the clock is a braking service, such as 19. This may be a curved portion provided with cushioning or flexible material to bear against the curved edge of a phonograph table, such as 20. On the under face of this brake plate at the outer end thereof. a detent arm 21 is located. This arm is used for preventing the retraction or withdrawal of the brake plate when the detent arm is disposed lengthwise of the plate, as will be apparent from a consideration of Figures 4 and 6. The brake surface 19 may be mounted on a slotted vertical flange portion 22, in the slot of which a set screw 23 slides and is adjusted, said set screw being fastened to the turned-up end of the brake plate.

With the parts in the position shown in Figure 1, the lower end of the latch lever 10 is engaged in the smaller outer notch 13 of the brake plate. When, however, the alarm mechanism commences to operate the cam arm 9 will move from the position shown-in Figure 1 and in a counterclockwise direction and force the upper end of the latch lever 10 to the right against the action of spring 11. This will move the lower end of the latch lever 10 to the left out of the notch 13. This movement will permit the spring 17 to force the brake plate inwardly, thus removing the brake surface 19 from Contact with the phonograph table 20. However, the cam arm 9 only engages with the latch lever momentarily and instantly after it has moved said lever to a position where the brake plate is released it becomes disengaged therefrom so that the spring 11 will instantly force the lower end of the latch lever into engagement with the notch 14: preventing too much inward retraction of the brake plate. As the spring 11 forces the upper end of the latch lever to the left, as it is being released by the cam arm 9, the upper end 24 of said latch lever will come in con tact with the vibrating end of the linger 6 and this contact will tend to stop the clapper mechanism with which said finger is associated.

In order to set the brake mechanism it is merely necessary to set the alarm in the usual manner and then pull out the brake plate which will automatically be held outward by the engagement of the lower end of the latch lever in the notch 13 as the plate is pulled out. The alarm clock is then placed on the platform of the talking machine with the brake surface bearing firmly against the edge of the phonograph table and will thus remain until the alarm goes off.

It will thus be observed that by attaching this simple combination of elements to an ordinary alarm clock Without material alteration thereto I can set the alarm clock on a phonograph to hold its table stationary until an alarm goes off. This requires absolutely no alteration or change in the manufacture and construction of a phonograph, merely a slight attachment to an ordinary alarm clock. This construction therefore achieves a highly useful and unique result and at the same time can be mamifactured extremely economically and operated with equal simplicity.

I claim:

1. In an alari'n clock phonograph release, a brake plate mounted within and extending from an alarm clock, said plate having a notch in its edge, a latch lever engageable in said notch, a spring tending to move the plate in a predetermimxd direction. said le ver holding the plate against said movement, an alarm mechanism, a cam movable upon the actuation of said mechanism to engage the latch lever, a second spring normally holding the latch lever against movement by the cam, a linger on the alarm mechanism vibrating therewith, the upper end of the latch lever engageable with the end of the finger in one position of the lever to stop the vibration of the alarm mechanism.

2. In an alarm clock phonograph release, a slidable brake plate, a spring tending to withdraw it within the alarm clock on which it is mounted, said plate having a pair of notches therein, a latch lever engageable in said notches, a spring tending to hold the latch lever in either of said notches, an alarm mechanism, a cam operated thereby to engage the lever and move it against the action of the spring, a finger on the alarm mechanism vibrating therewith, the upper end of said lever engageable with the end of the finger in one position of the lever to stop the alarm mechanism.

LOUIS CRANE. 

